Alkylation of aromatic amines in the presence of acidic, crystalline
申请人:Air Products and Chemicals, Inc.
公开号:US04740620A1
公开(公告)日:1988-04-26
This invention relates to a process for producing ring alkylated aromatic amines. In the process an aromatic amine is reacted with an olefin using an acidic crystalline molecular sieve as a catalyst. Under the conditions of the process the catalyst is extremely active and with amines that are capable of alkylation at the ortho and para positions, high selectivity to the ortho alkylated isomer can be achieved.
Ortho-alkylated aromatic amines via gamma alumina catalyst
申请人:Air Products and Chemicals, Inc.
公开号:US05068435A1
公开(公告)日:1991-11-26
This invention relates to a process for producing ring alkylated aromatic amines. In the process an aromatic amine is reacted with an olefin using gamma alumina as a catalyst. Under the conditions of the process the catalyst is extremely active and with amines that are capable of alkylation at the ortho and para positions, high selectivity to the ortho alkylated isomer can be achieved. The catalyst is also effective for producing unsymmetrical disubstituted alkyl aromatic amines, e.g., ethyl or propyl toluidine where one ortho position is substituted with a methyl group and the other substituted with an ethyl or propyl group.
Pesticidal compositions and processes related thereto
申请人:Dow AgroSciences LLC
公开号:US09018388B2
公开(公告)日:2015-04-28
This document discloses molecules having the following formulas (“Formula One” & “Formula Two” and “Formula Three”)
The Ar1, Het, Ar2, R1, R2, R3, R4, and R5 are further described herein.
An enantiomer, diastereoisomer or tautomer of a compound, represented by formula I:
wherein A, B, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, and R
10
are as defined herein, or a salt or ester thereof, as an inhibitor of HCV NS5B polymerase.